Title page for etd-0624114-152129


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URN etd-0624114-152129
Author Yu-Hung Lo
Author's Email Address harry6830@pcs.ee.nsysu.edu.tw
Statistics This thesis had been viewed 5570 times. Download 1463 times.
Department Electrical Engineering
Year 2013
Semester 2
Degree Master
Type of Document
Language zh-TW.Big5 Chinese
Title Design of Dual-Band Bandpass Filter for WLAN Applications
Date of Defense 2014-07-09
Page Count 55
Keyword
  • spur-line
  • bandpass filter (BPF)
  • dual-band
  • stub-loaded resonator (SLR)
  • Abstract The rapid development for the wireless communication applications is happening in the multiple bands and filters are fundamental components extensively used in microwave and millimeter-wave circuits. Recently, the use of wireless local area network (WLAN) systems has expanded rapidly, demanding more multiband applications.
    In this thesis, a microstrip-line dual-band bandpass filter using stub-loaded resonator (SLR) is proposed. The device has good selectivity in first pass band and wide bandwidth in second pass band. By properly adjusting the gap between source-load and SLR, good return loss at lower frequencies can be achieved.
    To further improve the rejection level between the first pass band and second pass band, the spur-line is etched in the coupled feeding line to produce another transmission zero at 4.3 GHz.
    Based on the proposed SLR, a dual-band bandpass filter with three transmission zeros is implemented. The upper stopband extends to 10.75 GHz to have good suppression below -20dB.
    Advisory Committee
  • Chih-Wen Kuo - chair
  • Hsin-Lung Su - co-chair
  • Pu-Hua Deng - co-chair
  • Hsing-Feng Chen - co-chair
  • Ken-Huang Lin - advisor
  • Files
  • etd-0624114-152129.pdf
  • Indicate in-campus at 0 year and off-campus access at 1 year.
    Date of Submission 2014-07-24

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